Scientific series.

no.12-14 (1972-73); no.26 1973; no.8-10 (1972-74); no.24-32 (1972-74); no.33-38 (1973-74); no.45 (1974); no.47-48 (1974); no.39-43 (1974-75); no.60-67 (1976); no.78-80 (1977); no.68-72 (1977-78); no.73-77 (1977-78); no.82 (1978); no.84-86 (1978); no.87 (1978); no.89 (1978); no.106-108 (1979); no.103-104 (1979-80); no.110-115 (1979-81); no.117-123 (1981); no.90-101 (1978-82); no.124-129 (1980-82); no.130-131 (1981-82); no.132-135 (1982-83); no.139 1984; no.136-140 (1984-85); no.142-143 (1985-86); no.145-151 (1986); no.166 (1988); no.153-165 (1986-89); no.168-171 1989-90; no.181 (1991); no.184-187 (1991); no.193 (1991); no.188-190 1991-92; no.201 (1993); no.196-199 1994